The spatial and temporal patterns of agricultural drought and their relationship with rice yield in Kupang Regency

• Autorzy: Jamaludin Adi , Shidiq Iqbal P.A. , Syamsuddin Riza P. , Indra Tito L. , Semedi Jarot M. , Rokhmatuloh Rokhmatuloh , Shafri Helmi Z. Mohd , Parhusip Ramanatalia

Identyfikatory

DOI

10.24425/jwld.2025.154262

• Języki publikacji: EN

Abstrakty

EN

In Kupang Regency, Indonesia, drought occurs almost every year, affecting rice production, which requires a significant amount of water. Despite its frequent occurrence, limited studies have focused on agricultural drought in the region. Therefore, this study aims to analyse the spatial and temporal patterns of agricultural drought and their relationship with rice yield using the Vegetation Health Index (VHI). Spatial and temporal patterns were analysed based on physical conditions, while the relationship with rice yield was examined using the Spearman correlation test. The results showed that the most severe droughts occurred in 2015 and 2019, affecting 15,063 ha and 14,187 ha, respectively. The Receiver Operating Characteristics (ROC) analysis revealed that VHI had an Area Under the Curve (AUC) of 0.732. In addition, agricultural drought had a positive correlation with elevation. The majority of drought occurred in areas with an elevations of 0-25 m a.s.l., alluvial soil types, slopes of 0-8%, and within 0-229 m of water sources. The results also showed that patterns in Kupang Regency closely followed precipitation trends, with a onemonth lag due to soil moisture. However, agricultural drought did not significantly impact productivity, as shown by significance values greater than 0.05.

Słowa kluczowe

EN

agricultural drought; Kupang Regency; Landsat 8; rice yield; vegetation health index

• Wydawca: Wydawnictwo ITP
• Czasopismo: Journal of Water and Land Development
• Rocznik: 2025
• Tom: no. 65
• Strony: 185--194
• Opis fizyczny: Bibliogr. 44 poz., mapy, tab., wykr.

Twórcy

autor

Jamaludin Adi

• Universitas Indonesia, Faculty Mathematics and Natural Sciences, Department of Geography, 16424, Indonesia

• https://orcid.org/0009-0002-0582-2858

autor

Shidiq Iqbal P.A.

• Universitas Indonesia, Faculty Mathematics and Natural Sciences, Department of Geography, 16424, Indonesia

• https://orcid.org/0000-0003-0430-4653

autor

Syamsuddin Riza P.

• Universitas Indonesia, Faculty Mathematics and Natural Sciences, Department of Geography, 16424, Indonesia

• https://orcid.org/0000-0002-5870-8832

autor

Indra Tito L.

• Universitas Indonesia, Faculty Mathematics and Natural Sciences, Department of Geography, 16424, Indonesia

• https://orcid.org/0000-0002-5908-7222

autor

Semedi Jarot M.

• Universitas Indonesia, Faculty Mathematics and Natural Sciences, Department of Geography, 16424, Indonesia

• https://orcid.org/0000-0003-3418-0997

autor

Rokhmatuloh Rokhmatuloh

• Universitas Indonesia, Faculty Mathematics and Natural Sciences, Department of Geography, 16424, Indonesia

• https://orcid.org/0000-0001-5529-4665

autor

Shafri Helmi Z. Mohd

• Universiti Putra Malaysia (UPM), Faculty of Engineering, Department of Civil Engineering and Geospatial Information Science Research Center (GISRC), 43400, Malaysia

• https://orcid.org/0000-0002-8669-874X

autor

Parhusip Ramanatalia

• Universitas Indonesia, Faculty Mathematics and Natural Sciences, Department of Geography, 16424, Indonesia

• https://orcid.org/0009-0007-7758-2204

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